Public Health Agency of Canada
Symbol of the Government of Canada

Diabetes in Canada: Highlights from the National Diabetes Surveillance System, 2004-2005

Tables and Figures

People With Diagnosed Diabetes (Prevalence)

People Aged 1 and Older

  • In 2004-2005, approximately 1.8 million, or about 1 in 18 people, in Canada, had diagnosed diabetes according to the NDSS data (1,806,269 cases overall, 862,808 among females and 943,461 among males). The prevalence rate for both males and females was 5.5% (5.2% among females and 5.8% among males). (Table 1 and 2)
  • According to the NDSS data, in 2004-2005, the prevalence of diagnosed diabetes was lower among children than adults. The rates increased with age from about 2% among individuals in their 30's to about 21%, or 1 in 5 adults age 75 to 79. (Figure 1 and Table 2)
  • According to the NDSS data, the age-standardized prevalence for 2004-2005 was 4.7% overall, 4.2% among females and 5.2% among males (Figure 2). A technique called age-standardization dampens the influence of the underlying difference in age distributions from each province or territory, enabling fairer comparisons among populations and over time. For example, before age-standardization, a province with an older population than another will have a higher prevalence of diabetes, all other things being equal. Age-standardization reduces the effect of different age structures when we compare across jurisdictions and time periods. This is useful for diseases, such as diabetes, where the prevalence rates differ significantly among age groups and increase with age.
  • After adjusting the rates due to differences in age distributions among provinces and territories, the age-standardized prevalence of diagnosed diabetes was found to be higher in Newfoundland and Labrador, Nova Scotia, New Brunswick, Manitoba, and Ontario and was lower in Quebec, British Columbia, Yukon, Alberta, and Nunavut compared to the other provinces and territories. (Figure 2)
  • After adjusting the rates due to differences in the age distributions among the provinces and territories across time, the prevalence of diagnosed diabetes has increased by 24% between 2000-2001 and 2004-2005. (Figure 3)



Table 1. Prevalence Percentages, Number of Cases, and Incidence Rates per 1,000 People of Diagnosed Diabetes by Age Group, Year, and Sex, Canada, 2000-2001 to 2004-2005

Table 1. Prevalence Percentages, Number of Cases, and Incidence Rates per 1,000 People of Diagnosed Diabetes by Age Group, Year, and Sex, Canada, 2000-2001 to 2004-2005



Table 2. Prevalence and Incidence Rates and Counts of Diagnosed Diabetes by Sex and Age, Canada, 2004-2005

Table 2. Prevalence and Incidence Rates and Counts of Diagnosed Diabetes by Sex and Age, Canada, 2004-2005



Figure 1. Prevalence of Diagnosed Diabetes Among People Aged 1 Year and Older, Canada, 2004-2005

Figure 1. Prevalence of Diagnosed Diabetes Among People Aged 1 Year and Older, Canada, 2004-2005



Figure 2. Age-Standardized Prevalence Rates* of Diagnosed Diabetes Among People Aged 1 Year and Older, by Province and Territory, Canada, 2004-2005

Figure 2. Age-Standardized Prevalence Rates* of Diagnosed Diabetes Among People Aged 1 Year and Older, by Province and Territory, Canada, 2004-2005



Figure 3. Age-Standardized Prevalence Rates* of Diagnosed Diabetes Among People Aged 1 Year and Older, Canada, 2000-2001 to 2004-2005

Figure 3. Age-Standardized Prevalence Rates* of Diagnosed Diabetes Among People Aged 1 Year and Older, Canada, 2000-2001 to 2004-2005